Long-Lived Assets, Excluding Financial Instruments and Tax Assets, Classified by Location of Controlling Statutory Company (Detail) - USD ($) $ in Millions |
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|---|---|---|---|
| Revenues From External Customers And Long Lived Assets [Line Items] | |||
| Long-lived assets | $ 93,632 | $ 79,882 | $ 75,517 |
| United States | |||
| Revenues From External Customers And Long Lived Assets [Line Items] | |||
| Long-lived assets | 55,252 | 44,501 | 42,730 |
| Ireland | |||
| Revenues From External Customers And Long Lived Assets [Line Items] | |||
| Long-lived assets | 12,958 | 12,843 | 12,889 |
| Other Countries | |||
| Revenues From External Customers And Long Lived Assets [Line Items] | |||
| Long-lived assets | $ 25,422 | $ 22,538 | $ 19,898 |